# Tudor TK454 · Auxiliary battery 12V 45Ah 380A

![Tudor TK454 · Auxiliary battery 12V 45Ah 380A](https://bateriasonline.es/2610-home_default/tudor-tk454.jpg)

> Tudor TK454: 45 Ah auxiliary battery, 380 A (EN), 237×127×227 mm, positive terminal on the right, B24 case, AGM. Equivalent to Exide EK454.

**Category:** [Auxiliary batteries (back-up and in-vehicle service)](https://bateriasonline.es/en/auxiliary-backup-batteries) → [Tudor](https://bateriasonline.es/en/tudor-batteries)

- **Canonical URL**: https://bateriasonline.es/en/tudor-tk454
- **Language**: en
- **Brand**: Tudor
- **Reference**: BOL-TUDOR-TK454
- **EAN**: 3661024057738
- **MPN**: TK454
- **Price**: 207,87 € (VAT incl., Spain)
- **Last updated**: 2026-11-07

## Technical specifications

| Feature | Value |
|---|---|
| Brand | Tudor |
| Range | TUDOR AGM |
| Application | Auxiliary and back-up use |
| Technology | AGM |
| Voltage | 12 V |
| Capacity | 45 Ah |
| Cold cranking amps (EN) | 380 A |
| Length | 237 mm |
| Width | 127 mm |
| Height | 227 mm |
| Weight | 13.5 kg |
| Polarity | Positive terminal on the right |
| Terminal type | EN taper post |
| Case size | B24 (238 × 129 × 227 mm) |

## Quick description

The Tudor TK454 is an auxiliary battery (AGM) with 12 V, 45 Ah and 380 A cold cranking current, case size B24 (237 × 127 × 227 mm), with the positive terminal on the right. Need the positive terminal on the left? The same battery is the Tudor TK457.

## Description

## The Tudor TK454 at a glance

The Tudor TK454 is an auxiliary vehicle battery: it powers back-up functions such as Start-Stop, electric steering or the emergency system while the main battery starts the engine. Without it, Start-Stop or back-up warnings appear on the dashboard.
The TK454 belongs to the Tudor TUDOR AGM range. [The full range of Tudor batteries](https://bateriasonline.es/en/tudor-batteries)

## Equivalents and alternatives to the Tudor TK454

Other AGM batteries that fit the TK454's tray with the same polarity: an AGM can only be replaced by another AGM.

| Model | Technology | Capacity | Cold cranking (EN) | Dimensions (mm) |
|---|---|---|---|---|
| Exide EK454 | AGM | 45 Ah | 380 A | 237 × 127 × 227 |

## Tudor TK454 vs TK500 and TK457

How the TK454 compares with Tudor batteries of similar size and capacity:

| Model | Capacity | Cold cranking (EN) | Dimensions (mm) | Positive | Weight |
|---|---|---|---|---|---|
| Tudor TK454 (this one) | 45 Ah | 380 A | 237 × 127 × 227 | right | 13.5 kg |
| Tudor TK500 | 50 Ah | 570 A | 207 × 175 × 190 | right | 15 kg |
| Tudor TK457 | 45 Ah | 380 A | 237 × 127 × 227 | left | 13.5 kg |

- Tudor TK500: 5 Ah more, 190 A more cranking power, a different case (207 × 175 × 190 mm).
- Tudor TK457: identical to the TK454 except for the positive terminal, which is on the other side (positive terminal on the left).

## What it means that the TK454 is AGM

The TK454 is AGM: the electrolyte is absorbed in glass fibre mats, so it is sealed and spill-proof. Being sealed, the TK454 can be fitted in the boot or under a seat with no risk of spills.

## What to look at before buying the TK454

- Length, width and height of the TK454: 237 × 127 × 227 mm (European case size B24).
- The TK454 has the positive terminal on the right: compare it with your current battery.
- Capacity of the TK454: 45 Ah; the same as your current battery or slightly more is fine.
- The TK454 delivers 380 A cold cranking (EN standard); do not go below what your original battery states.

## Part numbers and codes for the Tudor TK454

Look for any of these TK454 codes on your current battery or in the manufacturer's catalogue:

| Commercial reference | TK454 |
|---|---|
| EAN | 3661024057738 |
| Case size (EN) | B24 |
| Terminal type | EN taper post |
| Not to be confused with | Tudor TK457 (45 Ah, 380 A, positive terminal on the left), Tudor TB454 (45 Ah, 330 A) |

## Frequently asked questions about the Tudor TK454

### TK454 or TK500: which one suits me?

Compared with the TK454, the Tudor TK500 has 5 Ah more and 190 A more cranking power. If your current battery says 570 A or more, choose the TK500; if it says 380 A or less, the TK454 is enough. Mind the space: the TK500 measures 207 × 175 × 190 mm.

### Tudor TK454 or TK457: what is the difference?

Only the polarity: the TK454 has the positive terminal on the right and the TK457 the positive terminal on the left. Capacity (45 Ah), cranking power and dimensions are identical.

### How much does the Tudor TK454 weigh?

13.5 kg, with 45 Ah of capacity. For reference, the Tudor TK500 (50 Ah) weighs 15 kg.

### Which battery is equivalent to the Tudor TK454?

Only other AGM batteries with its dimensions and polarity: Exide EK454. Neither an EFB nor a conventional battery replaces the TK454.

### What case size is the Tudor TK454?

Case size B24: 237 × 127 × 227 mm. The TK454 fits any standard B24 battery tray such as the Exide EK454.

## Keep comparing: alternatives to the TK454

- [More auxiliary batteries (back-up and in-vehicle service)](https://bateriasonline.es/en/auxiliary-backup-batteries)
- [Full Tudor catalogue](https://bateriasonline.es/en/tudor-batteries)
- [Exide EK457](https://bateriasonline.es/en/exide-ek457) · 45 Ah, 380 A, 237×127×227 mm
- [Exide EK500](https://bateriasonline.es/en/exide-ek500) · 50 Ah, 570 A, 207×175×190 mm

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*bateriasonline.es — Batteries and accessories · 2026-11-11*